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Bio 141 > Test 2.1 > Flashcards

Test 2.1 Flashcards

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Biology 101 flashcards
1
Q

How many fibers are controlled by one motor neuron?

A

100-1000 fibers

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2
Q

There are few fiber FINE control in your ?

A

Eye

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3
Q

Many fibers CRUDE control in your?

A

Leg

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4
Q

Define hypertrophy

A

Increase in muscle fiber size

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5
Q

Blood travels from the heart using which two circuits?

A

Pulmonary

Systemic

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6
Q

What does the pulmonary circuit refer to?

A

The lungs

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7
Q

What does the systemic circuit refer to?

A

Feeds the tissue

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8
Q

Where is the heart located

A

In the thoracic cavity

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9
Q

The top of the heart is called?

A

Base

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10
Q

The bottom of the heart is called

A

Apex

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11
Q

What is the coronary circulation

A

Hearts blood supply

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12
Q

What is the order of the blood flow for the heart

A

Right atrium
Right ventricle
Left atrium
Left ventricle

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13
Q

The right and left of the heart are divided by

A

Interatial septum

Interventricular septum

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14
Q

What are the three layers of the heart?

A

Epicardium/pericardium-outer
Myocardium-middle
Endocardium-inside

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15
Q

What does the pericardium consist of?

A

Protective sac covering heart
Double layered
Filled with fluid to reduce friction

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16
Q

What are some characteristic of the skeletal muscle?

A

Voluntary control
Striated
Multinucleate
Attached to bone

17
Q

What are some characteristic of cardic muscle?

A 
Involuntary control
Striated
Mononucleated
Only the heart
Autorhythmic
18
Q

What are some difference between right and left ventricles

A

Right ventricle wall is thinner
Right develops less pressure
Right ventricle is pouch shaped
Left ventricle is round

19
Q

What are the valves in the heart

A

Atrioventricular and semilunar

20
Q

What is the left and right valves of the atrioventricular valve called

A

R=tricuspid

L=bicuspid

21
Q

What are the left and right valves of the semilunar called

A

R=pulmonary

L=aortic

22
Q

Every muscle cell has ____

A

1 neuromuscular junction (NMJ)

Bio 141 (30 decks)

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